actually i focus on 9' display 1024x600 for 4k camera.
good and sharp, with focus peaking allow me to work well on focus.
i'm going to see VA from blackmagic, 5' fullHd, but if i cannot try it... i don't know if my eyes can see correctly on smaller display with smaller pixel a real focus. :-D

nippon kogaku 85mm 1.8 / 50mm 1.4, better 1.2/35mm 2.0/24mm 2.8 (2.0 you risk to find some lenses with strange coating).
if you are luck you can find all under 800 $, but you must also add since 80$ for lenses to buy bayonet change from nikon to x.
i bought from leitax.com bayonet changes for all nikons. You unmount screw from rear lens, remove nikon bayonet, add leitax bayonet, mount again screws. Now you have a xx mount solid and perfect. don't waste your time on adapter ring when you can buy for same money solid bayonet mount.
here some frame extract from shooting 85mm 1.8 on s35 sensor of Blackmagic Production Camera4K
https://www.behance.net/gallery/24987295/Old-Meet-New

BMPC 4k
i used BMCC 2.5k for a full lenght feature movie, nice product, but actually i bought a BMPC4k some follow reason :
- bmpc4k vs bmcc dinamic is since one stop, on dark side, not so usable when you compare side by side
- bmpc 4k mean s35 global shutter sensor, less crop on both EF mount.
- choose EF be cause is active mount, where you need stabilization, you can have. m4/3 of bmc is passive mount, not good like gh2/3/4 (i owned them, different beast)
- bmpc4k mean you can shoot excellent prores 4k-fullHD, 4k raw gorgous
- bmpc4k mean you can extract 8.9 mpx photo set raw from shooting

bmcc mean s16 sensor with EF active fullframe mount or mft passive, or you search old s16 lenses (angenieu produce excellent lenses zoom and prime, zeiss also), or you work with large crop cut and very video aspect ...
for video aspect i mean you need tokina 11-16 to have a lens that have focal angle of 35-50mm but when you shoot a face, 16mm is so far to be a normal lens.
battery... bmc don't have production battery, olny switch battery like pro cameras.

if you compare directly bmcc bmpc4k you cannot find so big picture difference about dinamic gamma, we mix in different production without problems, but bmcc is a camera that must used only with s16mm lenses to express the best of .

Other info bmpc4 mean 4k, ultraHD, HD. BMCC mean 2.5k only raw, HD only prores.
with bmpc 4k you can have larger choose of format. Also worst ultraHD prores proxy scaled is better than HD of 2.5k

Problems about ... what?
i have many nippon kogaku lenses, and i used indifocus rings until i build myself a custom rings to optimize my bmpc4k setup, all same very large rings, to avoid follow focus adjustment, and builded around to dented focus ring of these amazing lenses.
let me know you dubs.

seagate 8tb since 250$ each one. a 5900 speed storage disk born to storage.
between a usb 3.0 and esata dock i backup 480 gb from ssd (bmpc 4k raw footage) to each 8tb disk since in 60-70 minutes.
I have a nas sharkoon 8 bay, 8 x 8 tb = 32tb in double copy.
all disk work like single, to avoid trouble or mistake from raid damage (in past i had too much problem).
I can backup where i have energy to put my notebook and my nas On.
Where i not have energy i can backup with my notebook on second internal disk (2tb) easely with simple flying usb 3.0 dock.
i use raw4pro software that manage double copy of my data with check, create dailies in different format from prores to dnxhd to CineformRaw.

The taste of horror is very personal, everyone has his personal scary list, who be scaried from splatter, who from psichological plot, everyone can list many different movies. Here some of mine.
1 - Poltergeist
2 - Evildead (80)
3 - Scanners
4 - Creature of black lagoon (that inspired spielberg for Shark Pov)
5 - Wolfman (49)
6 - They Live
7 - Videodrome
8 - Cabal
9 - Hellraiser
10 - Nightmare on Elm street : New Nightmare